Superior electrochemical performance of a coin cell based on MgCo2O4@ air plasma exposed ELAC for magnesium batteries and supercapacitors

Abstract

Composite materials have been growing in prominence in the field of electrochemical studies in recent years. This study emphasizes its core use as an electrode cathode material while exploring its many uses in different electrochemical systems. The key element of the composite material is the air plasma treated activated carbon from eucalyptus leaves that has been incorporated with purely synthesized MgCo₂O₄ which makes the Nano composites. Following the air plasma treatment, the EL activated carbon improves the material's wettability, adhesion, and conductivity. The combination of APT ELAC + pure MgCo₂O₄. Using XRD, FESEM, BET, and XPS analyses were used to characterize the phase analysis, structural morphology, surface area, and chemical composition of the as-prepared composite material. The paper discusses the electrochemical results of the composite material for the cathode electrode material's both diffusive and capacitive behavior. When APT ELAC is coupled with pure MgCo₂O₄, a high specific capacitance of 1670 Fg^-1 at a current density of 0.3mAg⁻¹. The cyclic stability is 94 % pertains for 3000 cycles. Therefore, the designed device's excellent performance, sustainability, and pivotal role in technological advancement highlights their fundamental features in molding the future of energy storage and providing a route towards a more efficient and environmentally friendly future.